Preheat oven to 400°. In a large skillet, cook the beef, onion and celery until the meat is no longer pink and the vegetables are tender; drain. Stir in salt and pepper. , Spoon mixture into a greased 3-qt. baking dish. Spread with soup. Top with frozen potatoes. Bake for 40 minutes or until bubbly. Sprinkle with cheese. Bake for 5 minutes or until cheese is melted.